Discussion on Purelight Wordpress Theme

i installed the theme but i get 500 server error on my blog when the theme is activated (admin works fine just the actual front side) . it works fine when i activate other themes installed and i did all the steps explained in documentation to install (giving 777 to cache folder) , my word press is 3.5.2 , i just cant see why it is not working , the other themes available on my wordpress works like charm but purelight gives 500 internal server error! what should i do ?

Hi inatmo, I’ve bought Purelight but I need to know how fix some problems.
The menu doesn’t works correctly, the first time i cross hover i see the submenu, but if I try to cross again the submenu doesn’t appears.